+# _LT_WITH_AIX_SONAME([DEFAULT])
+# ----------------------------------
+# implement the --with-aix-soname flag, and support the `aix-soname=aix'
+# and `aix-soname=both' and `aix-soname=svr4' LT_INIT options. DEFAULT
+# is either `aix', `both' or `svr4'. If omitted, it defaults to `aix'.
+m4_define([_LT_WITH_AIX_SONAME],
+[m4_define([_LT_WITH_AIX_SONAME_DEFAULT], [m4_if($1, svr4, svr4, m4_if($1, both, both, aix))])dnl
+shared_archive_member_spec=
+case $host,$enable_shared in
+power*-*-aix[[5-9]]*,yes)
+ AC_MSG_CHECKING([which variant of shared library versioning to provide])
+ AC_ARG_WITH([aix-soname],
+ [AS_HELP_STRING([--with-aix-soname=aix|svr4|both],
+ [shared library versioning (aka "SONAME") variant to provide on AIX, @<:@default=]_LT_WITH_AIX_SONAME_DEFAULT[@:>@.])],
+ [case $withval in
+ aix|svr4|both)
+ ;;
+ *)
+ AC_MSG_ERROR([Unknown argument to --with-aix-soname])
+ ;;
+ esac
+ lt_cv_with_aix_soname=$with_aix_soname],
+ [AC_CACHE_VAL([lt_cv_with_aix_soname],
+ [lt_cv_with_aix_soname=]_LT_WITH_AIX_SONAME_DEFAULT)
+ with_aix_soname=$lt_cv_with_aix_soname])
+ AC_MSG_RESULT([$with_aix_soname])
+ if test aix != "$with_aix_soname"; then
+ # For the AIX way of multilib, we name the shared archive member
+ # based on the bitwidth used, traditionally 'shr.o' or 'shr_64.o',
+ # and 'shr.imp' or 'shr_64.imp', respectively, for the Import File.
+ # Even when GNU compilers ignore OBJECT_MODE but need '-maix64' flag,
+ # the AIX toolchain works better with OBJECT_MODE set (default 32).
+ if test 64 = "${OBJECT_MODE-32}"; then
+ shared_archive_member_spec=shr_64
+ else
+ shared_archive_member_spec=shr
+ fi
+ fi
+ ;;
+*)
+ with_aix_soname=aix
+ ;;
+esac
+
+_LT_DECL([], [shared_archive_member_spec], [0],
+ [Shared archive member basename, for filename based shared library versioning on AIX])dnl
+])# _LT_WITH_AIX_SONAME
+
+LT_OPTION_DEFINE([LT_INIT], [aix-soname=aix], [_LT_WITH_AIX_SONAME([aix])])
+LT_OPTION_DEFINE([LT_INIT], [aix-soname=both], [_LT_WITH_AIX_SONAME([both])])
+LT_OPTION_DEFINE([LT_INIT], [aix-soname=svr4], [_LT_WITH_AIX_SONAME([svr4])])
+
+